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High-efficiency SoC LED drivers enable automotive front lighting

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Etmax
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re: High-efficiency SoC LED drivers enable automotive front lighting
Etmax   2/27/2011 12:34:02 PM
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The automotive environment requires ambient temperature operation up to 85deg.C and significant vibration. Also high intensity LED's might be rated at 20,000 hours, but at that time the intensity will have dropped to 50%. Also I have seen rear lamp LED's where 1 or more LED's have failed (probably due to mechanical vibration) which for a headlight would be unacceptable. I believe early adopters of LED Headlights will be very disappointed due to these factors.

_hm
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re: High-efficiency SoC LED drivers enable automotive front lighting
_hm   2/20/2011 7:04:55 PM
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Paul, I followed to link for complete article. In that you refer to NCV78663. I tried to get PDF datasheet for it on ON Semi web pages, but could not locate it. Will you please send me link or PDF data sheet for NCV78663 at homodi@hotmail.com. Thanks.

_hm
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re: High-efficiency SoC LED drivers enable automotive front lighting
_hm   2/20/2011 6:47:55 PM
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LED Lighting in automobile is highly desirable. As this technology will soon become essential, there is need to have some inernational standard. This stanadard will have many advantages. First, the input power, communication and control, form factor, connection and electro-optical properties will be same or well defined for all LED lamps. With this, automobile manufacturer and end user will have freedom to replace one LED Lamp with another, just like normal lamp. LED driver technology is still evoloving and we will see very high quality, better intelligence, more powerful light source (e.g. introduction of Cree X-Lamp MPL LED). With introduction of standard, end user can upgrade their LED lighting in car for few more years and take advantage of new technology. LED an LED driver vendors can exploit this opportunity of dynamic market. Does any international body in automobile industry put effrot for this cause?

agk
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re: High-efficiency SoC LED drivers enable automotive front lighting
agk   2/20/2011 11:13:29 AM
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LED head lights need to work at high temperatures near the engine. The design needs to take care of the ambience very much. The system on chip LED drivers can monitor and control the various factors described in this article.

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